Media: when activating a mode after [29056], don't trigger the {mode}:activate event twice in a row.

See #29366.


git-svn-id: https://develop.svn.wordpress.org/trunk@29601 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/js/media-views.js

@@ -1776,12 +1776,6 @@
 			this.activeModes.add( [ { id: mode } ] );
 			// Add a CSS class to the frame so elements can be styled for the mode.
 			this.$el.addClass( 'mode-' + mode );
-			/**
-			 * Frame mode activation event.
-			 *
-			 * @event this#{mode}:activate
-			 */
-			this.trigger( mode + ':activate' );
 
 			return this;
 		},